Sick Watch

Know you're getting sick before you feel it.

Sick Watch monitors your overnight health signals – heart rate, HRV, temperature, and breathing – to spot the patterns that appear 1-3 days before illness symptoms.

Based on research from Stanford and UCSF involving 63,000 participants, multi-signal detection can identify illness brewing with 82% accuracy, nearly 3 days before you'd normally notice.

How it works:
- Wear your Apple Watch to sleep
- If you have existing sleep data, predictions start immediately
- New watch owners get early predictions after 7 nights, full confidence at 14
- Get alerted when signals suggest your body is fighting something
- Take action early – rest up, clear your schedule, boost your defences

Features:
- Four-signal monitoring (temperature, HRV, heart rate, respiratory rate)
- Personal baseline (not population averages)
- Automatic alerts when something's brewing
- No iPhone required – runs entirely on Apple Watch
- Privacy-first – all data stays on your device

Requirements:
- Apple Watch Series 4 or later
- watchOS 10 or later
- Series 8+ recommended for temperature monitoring

One-time purchase. No subscription. No ads.

NOTE: Sick Watch is not a medical device and does not provide medical diagnoses. It is intended for general wellness purposes only. Always consult a doctor before making any medical decisions.